If I wanted to actually try and evoke melancholy, then i guess I'd go with Satie's Gymnopedie no. 1http://www.youtube.com/watch?v=S-Xm7s9eGxU
Or actually, any of his 3 gymnopedies would do the trick. They all sound sort of similar.

lol you would say that! I'm surprised you didn't pick Motherhood by Utada. The new eva single. It's really really really really pretty. I get misty when I hear it and I don't even know what she is saying O.o